Brake shoe



De@ 7 1926' 1 E` LA BRIE BRAKE SHOE Filed July 19,

INVENTOR Lunc'f-:R ELABmE haar@ ATTORNEY Patentefi Dec, 7, 1926.'

ITE-n smiles PATENT OFFICE LUDGER E. LA. BRIE, 0F SQUTH BEND, INDIANA,ASSIGNOB T0 BENDIX BRAKE OOM- PANYNOF CHICAGO, ILLINOB, A `(JORIECIRATIN01' ELLINDIS.

om enfers.

Application flle Iuiy le,

This invention relates to brakes, and is illustrated as embodied in, anovel shoe for an internal expanding automobile brake. An object of theinvention is to provide a light and inexpensive but very strong hreh'eshoe, preferably adapted to overlap en ov jacent shoe of the seme brake,or if desireeh to overlap such 'a shoe at euch ,f

Having this obect in mind, on importent feature of the invention relatesto '.{orizoing at leest e. part of the stiiening Weis of the shoe, forexample at one or both enfle where it is desiredto overla the shoes?-shapeol. in cross-section radially of the shoe. Thai is, the webbranches vsome distance inwardly from the lfriction portion of the shoeto form a Channelehaped pocket which mayV overlep the end of an adjacentshoe.

rlhis leaves a ver57 narrow web immeeli ately adjacent the frictionface', which doos not interfere with riveting the lining to 'the shoe,and at the same' time obviatee any necessity of attaching a separateplate or like across the spaced parts of the web, support the brakelining.

i prefer to form the shoe of pressed metal, with two flanges engagingeach other and jointly forming the above-described stillen-I ing wehunil being spread apart to form the branching of the Weo. Variousfeatures of novelty relate to details of this spreading apart of thellanges some-distance inside of the friction portion of shoe@ The aboveund other ohiects and features 'of the invention, including variousnovel and desirable details of construction, will be apparent l'ronu thefollowing descrip-tien of the illustrative emhocliinentshoivn in theaccompanying drawing?, in which:

' Figure 1 is a vertical section, just inside the head of the brakedrum, through en eutornobile brake, showing the novel brake shoes inside elevation;

Figure 2 is a partial section on the line- Q-2 of Figure l, showing theoverlapping of two of the shoes;

Figure 3 is a section through the overlapping parts of the shoes, oneither of the lines :sAlOFigure 1 or Figure 2;

Figure e is a partial section on the line #4 oi Figure showin the pivotconnecting two ot' the shoes; an

v eng 192e; smal No. 123,289.

Fi ure 5 is a section through any one of the 's toes, on ,any one of thelines 5-5 of Fi'ure i. l

`lie brake selected for illustration includes a rotatable drum 10, etthe open Side which is e Support such as a backing plete l2, and' Withinwhich are arranged three hrehe shoes 14:, 16 and 18, shoes 14 i8preferably .being interchangeable. Shoe i6 is anchored on e pivot 2Gcarried hy the' cooking plate, while shoes le and ere respectivelyconnected. to shoe lo by pivots 22 and 24.

The breite is applied by forcing shoes ifi and i8 eport oy means such ese double com 2t, against the resistance of e, return spring 28, shoe i6being forced toward the drum egeinst the resistance of en auxilieryreturn 3Q lo the .shoes 14 sind i8 ect-ing through pivots 22 and 2e "Theidle position of shoe lo meg he determined by on adjust siblegro-ovegliv eccentric 32 interlocking with on the ont?. of oivo't endtoward whieh pivot is urgeci hy spring 3G.

in the iiiostrated arrangement each of the shoes anni 18 is formed by'riveting or spot-welding or otherwise securing heele to nach twosteinpings, eeeh having on outer cylindrical Range le su porting onesiete of the breite lining 36, an 4which have lenges 36 jointly formingthe stilening web of the shoe, end formed with en opening e() lar enoughto afford ample clearance for anc or pivot Q0, which tekes the torqueof` all three shoes. Integral hearings or hesses 42 may be drawnoutwardly on flangesl 38 to embrace the several pivots, and flanges 38may be grooved to forni strengthening ribs 44. There4 may also be shortstifen-A ing flanges 46 along the inner edges; of the stampings.

The present invention relates to certain features of the brake shoes, esfor example shoe 16, Whether or not they are used in the particularbrake descri'be; ebove. In a general way, shoe 16 may be like shoes 14and 18 in construction, having the flanges 84 supporting the brakelining 36, andv flanges 38 inte forming the sti ening web of the shoe.

According to an important feature of the invention, however, the flanges38 of shoes i6,

al therewith and jointly preferably et the ends o the shoe, aftercontinuing together some distance redieliy inward (see *igure 3) arespread eport to form spaced portions straddling the end of shoe 1s (or18). Thus this part ot' the shoe is i-shaped in cross-section radiciw lyof the shoe, with the stem of the Y immediately adjacent the frictionportion Sie of the shoe. This part of the shoe is also ishaped insection iengthwise of the shoe in thershoe 16 illustrated, as appears inFigure 2 or Figure 4, since the center of the shoe is of T-section- Thenlove-descried construction forms a. channel-shaped pocket et each endof the shoe, overlapping the end lof the adjacent shoe 14 or 1S, undwith the sides of the pocket overlapping shoe 14 projecting es mountingarms ivoted on the enchor 20 and offset Within t ie curve of the shoe toYclear the end of the friction portion of shoe 14.

-While one very desirable construction has been described in detail, itis'fnot my intention to limit the scope of the invention to thetaarticuler construction,v or otherwise thon gy the terms of the appendedclaims.

' l chum:

1; An arcuate brake shoe how/ingerir. cylindrical Yiriction portion ando. stitiening web between theY edges of the friction Jortiom et least oport of the stifening we being Y-shaped in radici. cross-section.

2. An credete brake shoe having a cylindrcsl friction ortion and o.sti'cning web between the e ges o the friction portion, at leest o. portoi the stiiening web' being Y-shoped in radial crosssection, with thestem of the Y adjacent the friction poi-tion and with.' the two bronchesforming parts spaced from each other crosswise ot the shoe.

3. An arcuate brake shoe having a cylindricel friction portion and a,stifening web between the edges of the friction portion, et least oneend of the stiiiening web being if-shaped in radio1 crosssection, withthe stein or' the li" adjacent the friction portion of the shoe.

An trennte ioriihe shoe having s.. cylindricciilrictioii portion Lind nstiiening; weh, the sticninfg; 'web end the friction portion jointlybeing* "ishs'gied in radial crosssec tion in the central pert o theshoe, end with Athe stiiieningg weh et leest at one end oi the shoebranching to be i1shapcd in crossseo both rodiolly end lengthwise of theshoe.

5. An arcuate brake shoe having e. cylindricei friction portion and astiening web, the stiii'oning web ond the friction portion jointl 'beingT=shaped in radial cross-se"u tion in the central part of the shoe, sindwithV the stiii'ening web at, least et one end oi the shoe if-shaped incross-section rediiilly of the shoe.

6. An arcuate broke shoe having e, cylindricsl friction portion and e.stiii'ening sich,

oniiir the stiii'ening; weh 'and the friction portion" jointly being;'ip-shaped in radio1.` cross-sec- 1. N 1 l tion in ne @entrai port cithe shoe, ond with the stiiieningg web et both ends oi the shoe shzipedin cross-section rad is of the shoe.

8. .ein nrcuotc broke slice bevil/xg s. cylini drics friction portionend :i stiiiening web, the stifiening et one end of the shoe being"if-shaped in redini cross-section with 'the stein edwcont the frictionportion, and

with the sides of ihe if-section part of the' web projecting beyond theend of the friction portion to form mounting firms.

9. fin' nrcnste brake shoe having e cylindrical friction portion und e.stiffening. weh7 the stifiening weh nt one end ont the shoe heling;if-shaped in radici oross-section with the stein adjacent the frictionportion, ond with the sides oi the Y -section port of the web projectingbeyond the endo" the friction portion to forni mounting arms, the erinsbeing oiset within the curve of the shoe to stroddle the end of unedjucent shoe end clear the end of the friction non tion oi' sindadjacent; shoe.

10. An arcuate broke slice of pressed metal parts including acylindricui friction portion und two iisnges jointly forming n stiieningweb, said flanges for at leest :i part of the len in engagementimmediately adjacent the friction portion and being spread apart fromeach other ns they are continued inwardly radially of the shoe, to formet lessi. :i part oit the web-of "vshope in radici cross-section.

ll. An ercniitc. broke shoe of pressed niet; i parte incindin: scylindiicei friction portion und two icngesfyointiy forming o stiieningweb, "sii 'fes el'. leest :it one end ci shoe :ngagemcnt 'ienne disto-dyadjacent :ne mamon portion and he ing spread sport zrozn each. other asthey ere' continued. inwordiy rndieiiy oi the shoe, to form et least aport of the web oi? 'if-shops in redini cross-section.

12. in arcuate eroico shoe oi pressed metei ports inch cyiindricel'ction portion and tivo @to Ointly e stiiifening weh, sind riesigeskheing in. engogemont with cosh other in the central wat ot the shoe'find When teken with the ti'riction portion being substcntiolnT-slispod in radial cross-sectiomond et esst it one l Sii necesa? end ofthe shoe being in engagement with each other immediately adjacent thefriction portion and then spread apart' to form a channel-shaped pocketat said end of the shoe.

' of the shoe and when taken with the friction portion beingsubstantially T-shaped in radial cross-section, and at both ends of theshoe being in engagement with each other immediately adjacent thefriction portion and then spread apart to forni-a channelshaped pocket,th'elsi'des ot one of said pockets being continued as spaced mountingarms.

14. An arcuate brake shoe of pressed metal parts including a.cylindrical friction portion and two flanges jointly itnniing astili'ening web, said flanges being in engagement with each other inthecentral part of the shoe and when taken with the friction portion beingsubstantially T-shaped in ra dial crosssection, and at least at one endof the shoe beingin engagement with each other immediately adjacent thefriction portion and then spread apart to form a channelshaped pocket atsaid end ot' the shoe, the innges where they form the pocket sides beingprovided with bearings to engage pivoting means.

15. An arcuate brake shoe of pressed metal parts including` acylindrical friction portion and two flanges jointly forming a stiieningweb, said flanges being in engagenient with' each other in the centralpart of the shoe and when taken' With the friction portion beingsubstantially T-shaped in radial cross-section, and at both ends of theshoe being in engagement With each other in'nnediately adjacent thefriction portion .and then spread apurtto form a channelshaped pocket,the sides of one of said pockets being continued as spaced mountingarms, the flanges where they form the pocket sides being provided withhere to engage pivoting means.;

16. An arcuate brake shoe built i two generally L-section stanipingsback to back, with outer cylindrical fla, jointly forming the frictionportion o shoe, and. with the .inner .flanges :ici forming a stitleningweb, stilfeniniL flanges at least for part nf the length shoe beingspread apart some distant side of the friction portion to form anel-shaped pocket.

1T, An arcuate brake shea huilt up two generally ila-section stampingsfastener. hack to bach, with outer cylindrical iiang jointly forming thefriction pertion of shoe, and with the inner flanges joint forming astifening web., said stilleninf wel,

flanges at least at one end of the i spread apart some distance initieelfriction portion to forni a channel-shaped pocket.

18. An arcuate brake shoe built im two generally tfsection stainpings ifhack to back.) with outer cylindrical f g., jointly forniing thefriction portion of the shoe, and with the inner ilanges jointly Forminga stiliening web, said Stilening web flanges at both ends of the shoe'being spread apart some distance inside of the friction portion .tnform channel-shaped pocketso 19. An arcuate brake Vshoe built up of Stwo generally lsection stampin'gs fastened back to back, with outercylindrical lianges jointly forming the friction portion oi. the shoe`and with, the inner flanges jointly forming a s till'ening web, saidstiiiening web flanges at least at. one end ofthe shoe being spreadapartsorne distance inside of the friction portion to forni achannel-shaped pocket, and with the flanges forming the sides ot saidpocket projecting beyoi'id the end of the friction portion to formspaced mounting arms.

ln testimony whereof, signed my name.

- Limena n; LA nain,

l have hereunto

